Floribunda rose plant named &#39;Poulcas023&#39;

ABSTRACT

A new garden rose plant of the floribunda class which has abundant, yellow-orange flowers and attractive foliage. This new and distinct variety has shown to be uniform and stable in the resulting generations from asexual propagation.

BOTANICAL DESIGNATION

Rosa hybrid

VARIETY DENOMINATION

‘Poulcas023’

SUMMARY OF THE INVENTION

The present invention constitutes a new and distinct variety of garden rose plant which originated from a controlled crossing between the female seed parent ‘Poulfl002’, described and illustrated in U.S. Plant Pat. No. 15,053, and the male pollen parent, an unnamed seedling.

The two parents were crossed during the summer of 1995 and the resulting seeds were planted in a controlled environment in Fredensborg, Denmark. The new variety, named ‘Poulcas023’, originated as a single seedling from the stated cross.

The new variety may be distinguished from its female seed parent by the following combination of characteristics:

-   -   1. The claimed plant has yellow-orange flowers while the seed         parent has pink flowers.     -   2. The seed parent has 20 to 25 petals. ‘Poulcas023’ has 65-75         petals.

The new variety may be distinguished from its male pollen parent primarily by flower color. The pollen parent has solid pink flowers, while the claimed plant has yellow-orange flowers.

The objective of the hybridization of this rose variety was to create a new and distinct variety for garden use with unique qualities, such as:

-   -   1. Uniform and abundant yellow-orange flowers;     -   2. Vigorous, but compact and uniform growth when propagated both         as a budded rose and on its own roots;     -   3. Exceptional disease resistance;     -   4. Suitability for cultivation within small containers.

This combination of qualities is not present in previously available commercial cultivars of this type, known to the inventor, and distinguish ‘Poulcas023’ from all other varieties of which we are aware.

As part of the rose development program, Mogens N. Olesen germinated the seeds from the aforementioned hybridization during winter of 1995 and conducted evaluations on the resulting seedlings in a controlled environment in Fredensborg, Denmark. ‘Poulcas023’ was selected in the spring of 1996 by the inventor as a single plant from the progeny of the aforementioned hybridization.

Asexual reproduction of ‘Poulcas023’ by traditional budding and rooted cuttings was first done by Mogens N. Olesen in the nursery in Fredensborg, Denmark in July, 1996. This initial and other subsequent asexual propagations conducted in controlled environments have demonstrated that the characteristics of ‘Poulcas023’ are true to type and are transmitted from one generation to the next.

BRIEF DESCRIPTION OF THE DRAWING

The accompanying color illustration shows as true as is reasonably possible to obtain in color photographs of this type, the typical characteristics of the buds, flowers, leaves, and stems, of ‘Poulcas023’. Specifically illustrated in the drawing are:

FIG. 1.1; Flower bud closed, flower bud as sepals unfold, and partially open;

FIG. 1.2; Open flowers;

FIG. 1.3; Sepals, receptacle, and peduncle;

FIG. 1.4; Mature leaf;

FIG. 1.5; Flower petals, detached;

FIG. 1.6; Bare stem exhibiting prickles;

DETAILED DESCRIPTION OF THE VARIETY

The following is a description of ‘Poulcas023’, as observed in its growth in in a field nursery in Odense, Denmark. Observed plants are 2 years of age, and were grown on Rosa multiflora understock. Color references are made using The Royal Horticultural Society (London, England) Colour Chart, 2001, except where common terms of color are used.

For a comparison, several physical characteristics of the rose variety ‘Poulcs011’, U.S. Plant Pat. No. 15,232, are compared to ‘Poulcas023’ in Chart 1. CHART 1 ‘Poulcas023’ ‘Poulcs011’ Petal Count 65 to 75, normally 10 of 35, with 9 petaloids which are petaloids Flower Diameter 55-75 mm 60 to 70 mm Outer petals upon Orange Group 27C at petal Orange Group 27A opening: upper margin, blending to become petal surface color Yellow Group 11C at the middle zone. At the basal zone petals change from Yellow 12C to 12A at the point of attachment.

FLOWER AND FLOWER BUD

-   Blooming habit: Continuous. -   Flower bud:     -   -   Size.—Upon opening, 23 mm in length from base of receptacle             to end of bud. Bud diameter is 14 mm.         -   Bud form.—Ovate.         -   Bud color.—As sepals unfold, petals are Orange Group 26A             with intonations of Orange-Red Group 34A. And splotches of             Greyed-Purple Group 183A to Red Group 53A observed.         -   Sepals.—Upper Surface: Color: Yellow-Green Group 146B.             Texture: Weak to medium pubescence observed. Lower Surface:             Color: Yellow-Green Group 1446A with occasional anthocyanic             pigments of Greyed-Purple Group 183A. Texture: Smooth.             Shape: Apex: Cirrhose. Base: Flat at union with receptacle.             Margins: Margins have medium foliaceous appendages on three             of the five sepals. Stipitate glands are sparse. Size: 30 mm             long by 7 mm wide.         -   Receptacle.—Surface Texture: Smooth. Shape: Urn shaped.             Size: 7 mm (h)×7 mm (w). Color: Yellow-Green Group 144A.             Anthocyanin: Greyed-Purple Group 183A to 187B.         -   Peduncle.—Surface: Rough. Length: 55 to 80 mm average             length. Diameter: 3 mm. Color: Yellow-Green Group 145A.             Anthocyanic pigments of Greyed-Purple 187B. Strength: Strong             strength.         -   Borne.—Flowers are borne in clusters of 3 to 7 buds per             flowering stem on average. Inflorescence is a Corymb. -   Flower bloom:     -   -   Fragrance.—Medium rose scent.         -   Duration.—As a garden plant, flowers last up to 15 to 20             days. Petals do not fall cleanly away from plant.         -   Size.—55 to 75 mm. Average flower dept is 25 mm when open.         -   Form.—Younger flower: Quartered rosette, double with many             overlapping petals packed into quarter sections. Older             flower: Rosette, double flower with many slightly             overlapping petals of different sizes.         -   Shape of flower, side view.—Upon opening: The upper portion             is flat. The lower portion is flattened convex. After             opening: The upper portion is convex. The lower portion is             concave.         -   Petalage.—Under normal conditions, flowers have 65 to 75             petals, normally 10 of which are petaloids.         -   Petal color.—Upon opening, outer whorl of flower petals             Upper surface: Yellow-Orange Group 22A with an overlay of             Orange-Red Group 34A. Lower surface Yellow-Orange Group 22A             with an overlay of Orange-Red Group 34A. Petal color streaks             Greyed-Purple Group 183A observed. Upon opening, petal             colors Upper surface: Orange Group 27C at petal margin,             blending to become Yellow Group 11C at the middle zone. At             the basal zone petals change from Yellow 12C to 12A at the             point of attachment. Lower surface: 3 to 4 mm of petal             margins are colored Red Goup 56A to 56B. Progressing towards             the petal base, Yellow-Orange Group 19A to 19B at the middle             zone. Basal zone is Orange Group 26A. Intonations of Yellow             Group 6C radiate from the petal base, extending to the             middle zone. After opening, inner and outer petals Upper             surface: Red Group 56A to 56B at the apex, blending to             become Red Group 56D. At the middle zone, coloration is             Yellow Group 11C. Light streaks of Yellow-Orange Group 19B             observed at middle zone. The basal zone is primarily Yellow             Group 6A. Occasionally, the upper surface of outer petals             exhibits color spots, Red-Purple Group 58B. Lower surface:             Red Group 56A to 56B at the margin of the apex, blending to             become Red Group 56D. At the middle zone, Yellow Group 11C             with streaks of Yellow-Orange Group 19A and 19B radiating             from the basal zone. The basal zone is Yellow 6A to 6C. -   General tonality: On open flower Yellow-Orange Group 19C to 19D with     margins colored Red Group 36B to 36C. -   Petals:     -   -   Petal reflex.—Somewhat reflexed at margins.         -   Petal margin.—Entire and uniform.         -   Shape.—Inner petals: Narrow elliptical. Outer petals: Broad             elliptical. Base: Inner petals: Acute. Outer petals: Obtuse.             Apex: Orbicular.         -   Size.—Petal size varies. Outer petals 30 mm (l)×20 mm (w).             Inner petals 40 mm (l)×43 mm (w).         -   Texture.—Smooth.         -   Thickness.—Average. -   Petaloids:     -   -   Quantity.—On average there are 10.         -   Size.—15 mm long×10 mm wide.         -   Shape.—Irregular and irregular, asymmetrical.         -   Color.—The upper and undersurface are Yellow Group 10B to             10C at apex with intonations of Yellow-Orange Group 18A, and             Yellow Group 6B at base. -   Reproductive organs:     -   -   Pollen.—None observed.         -   Anthers.—Size: Normally 2.5 mm long. Color: Yellow-Orange             Group 22A at margins. Yellow Group 10D at center. Quantity:         -   Filaments.—Color: Yellow-Group 7A to 7B. Length: 6 to 7 mm.         -   Pistils.—Length: Normally 5 mm long. Quantity: 85 to 95.         -   Stigmas.—Inferior in relative to the length of the filaments             and the height of the anthers. Color: Yellow Group 4B.         -   Styles.—Color: Yellow Group 2D.         -   Seed formation.—Not observed.

PLANT

-   Plant growth: Upright, bushy, moderately compact. The average height     of the plant itself is 60 to 100 cm. -   Stems:     -   -   Color.—Young wood: Yellow-Green Group 146A. Older wood:             Yellow-Green Group 146A with anthocyanin the color of             Greyed-Orange 176A.         -   Internodal distance.—On mature canes, 50 mm.         -   Length of stems.—On average, canes are 30 cm from the base             of the stem to the flowering portion.         -   Diameter.—9 mm.         -   Surface texture.—Young wood: Smooth. Older wood: Smooth. -   Prickles:     -   -   Incidence.—3 prickles per 10 cm of stem.         -   Length.—5 to 7 mm.         -   Shape.—Upper side: Convex to flat. Lower side: Concave.         -   Color.—Mature wood: Greyed-Yellow Group 160A to 160B. -   Plant foliage: Normal number of leaflets on normal leaves in middle     of the stem: 5 leaflets.     -   -   Compound leaf size.—130 mm (l)×95 mm (w).         -   Quantity.—2 leaves per 10 cm of stem.         -   Color.—Mature foliage: Upper Leaf Surface: Yellow-Green             Group 147A. Lower Leaf Surface: Yellow-Green Group 146B. -   Plant leaves and leaflets:     -   -   Stipules.—Size: 20 mm in length. Shape: Linear, slightly             broad based with outward extending apecies. Margins: Finely             serrated with few stipitate glands. Color: Green Group 143A.         -   Petiole.—Length: 20 to 27 mm. Diameter: Normally 2 mm. Upper             surface: Color: Yellow-Green Group 146A with intonations of             Greyed-Purple Group 184A. Lower surface: Color: Yellow-Green             Group 146B. Observations: Few small thorns below.         -   Rachis.—Size: 45 to 50 mm in length. Upper surface: Color:             Yellow-Green Group 146A with anthocyanic pigments of             Greyed-Purple Group 184A. Lower surface: Color: Yellow-Green             Group 146B. Observations: Few small glands on the upper side             and a few small prickles below observed.         -   Leaflet.—Size: 50 to 70 mm in length by 35 to 40 mm wide.             Edge: Serrated. General Shape: Ovate. Apex Shape: Acuminate.             Base Shape: Obtuse to rounded. Texture: Rugose. Thickness:             Average. Arrangement: Odd pinnate. Venation: Reticulate.             Leaf Gloss: Moderately glossy.         -   Disease resistance.—Above average resistance to powdery and             downy mildew, rust, black spot, and Botrytis under normal             growing conditions in Jackson County, Oregon.         -   Cold hardiness.—The variety is tolerant to USDA Cold             Hardiness Zone 6.         -   Heat tolerance.—The variety has been found to be suitable             for climate conditions found in the American Horticulture             Society heat zone 7. 

1. A new and distinct variety of rose plant of the floribunda rose class named ‘Poulcas023’, substantially as illustrated and described herein, due to its abundant yellow-orange flowers, disease resistance, and extended period of bloom. 